<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>html练习</title>
    <!--引用css-->
    <link rel="stylesheet" href="./public.css">
</head>
<body>
    <P>首页</P>
    <a href="./product.html">产品</a>
</body>
</html>